# US 11,441,574 B2 · HVACR blower > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,441,574 B2 - Document ID: US11441574B2 - Status: Granted - Kind: B2 - Application number: 17/132,973 - Filed: 2020-12-23 - Published: 2021-07-01 - Granted: 2022-09-13 - Earliest claimed: 2019-12-26 - Assignees: Trane International Inc. - Applicants: Trane International Inc. - Inventors: Karthik Sankar Ram; Ramesh Vedula; Nathan Wagers; Srikanth Kanduri - Web page: https://patentgrep.com/patent/US11441574B2 ## CPC - F04D 29/281: {for fans or blowers} - F04D 29/282: {the leading edge of each vane being substantially parallel to the rotation axis} - F04D 17/08: Centrifugal pumps - F04D 29/626: {Mounting or removal of fans} - F04D 29/703: {specially for fans, e.g. fan guards} - F05D 2230/60: Assembly methods - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS ## Abstract A blower and method of manufacturing a blower for a heating, ventilation, air conditioning, and refrigeration (HVACR) unit is disclosed. The blower includes a plurality of blower sections. Each section includes a first shroud, a second shroud spaced from the first shroud in a direction of a longitudinal axis of the blower, and a blade. The blade is formed such that a first end of the blade is joined with the first shroud and a second end of the blade is joined with the second shroud. A band is secured to the plurality of blower sections. ## Claims ### Claim 1 A blower for a heating, ventilation, air conditioning, and refrigeration (HVACR) unit, comprising: a plurality of blower sections, each section including: a first shroud, a second shroud spaced from the first shroud in a direction of a longitudinal axis of the blower, and a blade, the blade being formed such that a first end of the blade is joined with the first shroud and a second end of the blade is joined with the second shroud; and a band secured to the plurality of blower sections, wherein the first shroud of each of the plurality of blower sections includes a protrusion on a first radial edge of the first shroud and an opening on a second radial edge of the first shroud, the first and second radial edges being spaced circumferentially from each other. ### Claim 2 (depends on 1) The blower of claim 1, wherein the plurality of blower sections are plastic, metal, a composite material, or a printed composite material. ### Claim 3 (depends on 1) The blower of claim 1, wherein each of the plurality of blower sections is formed of a single piece, unitary construction. ### Claim 4 (depends on 1) The blower of claim 1, wherein the protrusion of a first of the plurality of blower sections is inserted into the opening of a second of the plurality of blower sections. ### Claim 5 (depends on 1) The blower of claim 1, wherein the band is secured to the plurality of blower sections by one or more of a fastener or an adhesive. ### Claim 6 (depends on 1) The blower of claim 1, wherein the blower is a centrifugal blower having a backward curved blade. ### Claim 7 (depends on 1) The blower of claim 1, wherein a number of sections in the plurality of sections is based on a number of blades for the blower. ### Claim 8 (depends on 1) The blower of claim 1, wherein each of the plurality of sections is the same. ### Claim 9 (depends on 1) The blower of claim 1, wherein the band is a ring. ### Claim 10 A method of manufacturing a blower for a heating, ventilation, air conditioning, and refrigeration (HVACR) unit, comprising: forming a plurality of sections of the blower, each section including a first shroud, a second shroud spaced from the first shroud in a direction of a longitudinal axis of the blower, and a blade, the blade being formed such that a first end of the blade is joined with the first shroud and a second end of the blade is joined with the second shroud; securing a band to the plurality of sections, and assembling the plurality of sections together to form the blower, wherein the assembling includes inserting a protrusion on a first radial edge of the first shroud of a first of the plurality of sections into an opening on a second radial edge of the first shroud on a second of the plurality of sections. ### Claim 11 (depends on 10) The method of claim 10, wherein the forming includes forming the plurality of sections from a plastic material. ### Claim 12 (depends on 11) The method of claim 11, wherein the forming includes a 3D printing process. ### Claim 13 (depends on 12) The method of claim 12, wherein the 3D printing process includes selective laser sintering, multi-jet fusion, or fused deposition modeling. ### Claim 14 (depends on 11) The method of claim 11, wherein the forming includes an injection molding process. ### Claim 15 (depends on 10) The method of claim 10, wherein the forming includes forming each section as a single piece, unitary construction. ### Claim 16 A blower for a heating, ventilation, air conditioning, and refrigeration (HVACR) unit, comprising: a plurality of blower sections, each section including: a first shroud, a second shroud spaced from the first shroud in a direction of a longitudinal axis of the blower, and a blade, the blade being formed such that a first end of the blade is joined with the first shroud and a second end of the blade is joined with the second shroud; and a band secured to at least one aperture of the first shroud of the plurality of blower sections by a fastener. ### Claim 17 (depends on 16) The blower of claim 16, wherein the plurality of blower sections are plastic, metal, a composite material, or a printed composite material. ### Claim 18 (depends on 16) The blower of claim 16, wherein each of the plurality of blower sections is formed of a single piece, unitary construction. ### Claim 19 (depends on 16) The blower of claim 16, wherein the first shroud of each of the plurality of blower sections includes a protrusion on a first radial edge of the first shroud and an opening on a second radial edge of the first shroud, the first and second radial edges being spaced circumferentially from each other. ### Claim 20 (depends on 16) The blower of claim 16, wherein each of the plurality of sections is the same.